<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片 -->
    <el-card>
      <!-- 2.为 ECharts 准备一个定义了宽高的 DOM -->
      <div id="main" style="width: 750px; height: 400px"></div>
    </el-card>
  </div>
</template>

<script>
// 1.导入echarts
// import * as echarts from "echarts";
export default {
  name: "Report",
  // dom元素初始化完毕时的钩子函数
  async mounted() {
    // 3.基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(document.getElementById("main"));
    // 4.指定图表的配置项和数据
    const { data: res } = await this.$http.get("reports/type/1");
    if (res.meta.status !== 200) return this.message.error("获取图表参数失败");
    // console.log(res);
    const options = Object.assign({}, res.data, this.options);
    // console.log(options);
    //5.使用刚指定的配置项和数据显示图表。
    myChart.setOption(options);
  },
  data() {
    return {
      options: {
        title: {
          text: "用户来源",
        },
        tooltip: {
          trigger: "axis",
          axisPointer: {
            type: "cross",
            label: {
              backgroundColor: "#E9EEF3",
            },
          },
        },
        grid: {
          left: "3%",
          right: "4%",
          bottom: "3%",
          containLabel: true,
        },
        xAxis: [
          {
            type: "category",
            boundaryGap: false,
          },
        ],
        yAxis: [
          {
            type: "value",
          },
        ],
      },
    };
  },
};
</script>

<style lang='less' scoped>
</style>